popeil97/turbulent-octo-hockeypuck

turbulent-octo-hockeypuck

package gpa;

import java.util.HashMap; import java.util.Map; import java.util.Scanner;

public class GPA {

public static double askUserForClassGrade(Scanner in) {
    while (true) {
        System.out.println("What is your grade in this class?(A, A-, B+, B, B-, etc.)");
        String grade = in.next();

        Double gradePoints = grades.get(grade);
        if (gradePoints != null) {
            return gradePoints;
        }

        System.out.println("Invalid Input.");
    }
}

private static Map<String, Double> grades = new HashMap<>();

public static void main(String[] args) {
    grades.put("A", 4.00);
    grades.put("A-", 3.67);
    grades.put("B+", 3.33);
    grades.put("B", 3.00);
    grades.put("B-", 2.67);
    grades.put("C+", 2.33);
    grades.put("C", 2.00);
    grades.put("C-", 1.67);
    grades.put("D", 1.00);
    grades.put("F", 0.00);

    String grade = "";
    Scanner in = new Scanner(System.in);
    System.out.println("How many classes?");
    int numClasses = in.nextInt();
    int[] creds = new int[numClasses];
    double[] classGrades = new double[numClasses];
    double[] classPoints = new double[numClasses];
    
    double totalcredits = 0;
    double gradevalue = 0.0;
    double totalpoints = 0.0;
    
    for(int k = 0; k < numClasses; ++k) {
        System.out.println("How many credits is your class worth?");
        creds[k] = in.nextInt();
        classGrades[k] = askUserForClassGrade(in);
        
        classPoints[k] = creds[k] * classGrades[k];
        totalcredits += creds[k];
        totalpoints += classPoints[k];
    }


    {
        
        double gpa = totalpoints / totalcredits;
        System.out.printf("Your calculated semester GPA is %.2f\n", gpa);
        System.out.println("Is this your first semester at UF? (yes or no)");
        in.nextLine(); // clear the previous
        
        String j = in.nextLine();
        if (j.equals("no")) {

            System.out.println("what is the total amount of credits you've taken at UF excluding this semester?");
            int k = in.nextInt();
            System.out.println("What is your total GPA from the previous semesters?");
            double a = in.nextDouble();
            double gpapoints = (a * k);
            double totalgpa = (gpapoints + totalpoints) / (totalcredits + k);
            System.out.println("Your cumulative GPA is " + totalgpa);

        } else if (j.equals("yes")) {
            System.out.println("Then your cumulative GPA is ." + gpa);
        }

    }

}

}